CVE-2024-39523

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to 'root' leading to a full compromise of the system.

The Junos OS Evolved CLI doesn't properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level.

This issue affects Junos OS Evolved: 

* All versions before 20.4R3-S7-EVO, * 21.2-EVO versions before 21.2R3-S8-EVO, * 21.4-EVO versions before 21.4R3-S7-EVO, * 22.1-EVO versions before 22.1R3-S6-EVO,  * 22.2-EVO versions before 22.2R3-EVO, * 22.3-EVO versions before 22.3R2-EVO, * 22.4-EVO versions before 22.4R2-EVO.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-78

Affected software

VendorProductVersions
Juniper NetworksJunos OS Evolved< 20.4R3-S7-EVO; >= 21.2-EVO, < 21.2R3-S8-EVO; >= 21.4-EVO, < 21.4R3-S7-EVO; >= 22.1-EVO, < 22.1R3-S6-EVO; >= 22.2-EVO, < 22.2R3-EVO; >= 22.3-EVO, < 22.3R2-EVO; >= 22.4-EVO, < 22.4R2-EVO
juniperjunos_os_evolved< 20.4r3-s7
juniperjunos_os_evolved>= 22.1, < 22.1r3-s6
juniperjunos_os_evolved>= 21.2, < 21.2r3-s8
juniperjunos_os_evolved>= 21.4, < 21.4r3-s7
juniperjunos_os_evolved>= 22.2, < 22.2r3
juniperjunos_os_evolved>= 22.3, < 22.3r2
juniperjunos_os_evolved>= 22.4, < 22.4r2

References

Timeline

Published
Jul 11, 2024
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2024

CVE-2024-395247.8An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attCVE-2024-395257.5An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS CVE-2024-395266.5An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS on MX Series with MPC10/MPC11CVE-2024-395275.5An Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the command-line interface (CLI) of Juniper Networks Junos OSCVE-2024-395285.7A Use After Free vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticateCVE-2024-395297.5A Use of Externally-Controlled Format String vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series CVE-2024-395307.5An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis management daemon (chassisd) of Juniper Networks Junos CVE-2024-395317.5An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series aCVE-2024-395326.3An Insertion of Sensitive Information into Log File vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a local, authentiCVE-2024-395335.8An Unimplemented or Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on QFX5000 Series and EX4600 Series allows an uCVE-2024-395345.4An Incorrect Comparison vulnerability in the local address verification API of Juniper Networks Junos OS Evolved allows an unauthenticated nCVE-2024-395356.5An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evo
CVE-2024-39523: High severity, CVSS 7.8 | Vulnix